WirelessChests

1 - Double Chests inside the same group will get inventory twice

What steps will reproduce the problem?
1. Setup a chest group with two chests creating a double chest.
2. Set one of the two chests making a double chest as main
3. Use sync command to sync chest group

What is the expected output? What do you see instead?
Expected: First 1/2 of inventory should copy to single chests and all of double chest should copy to double chests.

Result: Main chest duplicates inventory to all chests, including other half of double chest inventory